DE19718750B4 - Method and device for measuring the temperature of glow plugs of a self-igniting internal combustion engine - Google Patents
Method and device for measuring the temperature of glow plugs of a self-igniting internal combustion engine Download PDFInfo
- Publication number
- DE19718750B4 DE19718750B4 DE19718750A DE19718750A DE19718750B4 DE 19718750 B4 DE19718750 B4 DE 19718750B4 DE 19718750 A DE19718750 A DE 19718750A DE 19718750 A DE19718750 A DE 19718750A DE 19718750 B4 DE19718750 B4 DE 19718750B4
- Authority
- DE
- Germany
- Prior art keywords
- heating means
- glow plug
- glow
- voltage
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P19/00—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition
- F02P19/02—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs
- F02P19/025—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs with means for determining glow plug temperature or glow plug resistance
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P19/00—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition
- F02P19/02—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs
- F02P19/021—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs characterised by power delivery controls
- F02P19/022—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs characterised by power delivery controls using intermittent current supply
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Temperature (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Verfahren zur Temperaturmessung von Glühkerzen einer selbstzündenden Brennkraftmaschine von Kraftfahrzeugen, bei dem die Heizmittel der Glühkerzen mit einer pulsweitenmodulierten Spannungssignalfolge angesteuert werden, dadurch gekennzeichnet, daß in definierten Pausenzeiten (tp) zwischen den Spannungsimpulsen der pulsweitenmodulierten Spannungssignalfolge (Uimp) die Heizmittel (2) der Glühkerzen (1) mit einem Konstantstrom (IMeß) oder einer Gleichspannung vorgegebener Zeitdauer (tMeß) beaufschlagt werden und der durch die Beaufschlagung erzeugte Spannungsabfall (UA) über dem Heizmittel (2) der Glühkerze (1) als Maß für die momentane Isttemperatur der Glühkerze erfaßt wird.Method for temperature measurement of glow plugs of a self-igniting internal combustion engine of motor vehicles, in which the heating means of the glow plugs are controlled with a pulse width modulated voltage signal sequence, characterized in that in defined pause times (t p ) between the voltage pulses of the pulse width modulated voltage signal sequence (U imp ) the heating means (2) the glow plugs (1) are subjected to a constant current (I measuring ) or a DC voltage of predetermined duration (t measuring ) and the voltage drop (U A ) generated by the application above the heating means (2) of the glow plug (1) as a measure of the instantaneous Actual temperature of the glow plug is detected.
Description
Die Erfindung betrifft ein Verfahren zur Temperaturmessung von Glühkerzen einer selbstzündenden Brennkraftmaschine von Kraftfahrzeugen, bei dem die Heizmittel der Glühkerzen mit einer pulsweitenmodulierten Spannungssignalfolge angesteuert werden, sowie eine Vorrichtung zur Durchführung des Verfahrens.The The invention relates to a method for measuring the temperature of glow plugs a self-igniting Internal combustion engine of motor vehicles, in which the heating means of glow plugs be driven with a pulse width modulated voltage signal sequence, and a device for carrying out the method.
Selbstzündende Brennkraftmaschinen
benötigen
zum Kaltenstarten eine Vorheizung der Brennräume durch Glühkerzen,
welche bei einer Spannungsbeaufschlagung ihrer Heizmittel die Brennräume auf
eine entsprechende Temperatur aufheizen. Bei längerem Betrieb dürfen die
Glühkerzen
aber nicht wegen Überhitzung
durchbrennen. Aus diesem Grund werden die Heizmittel der Glühkerzen
pulsweitenmoduliert mit einer Spannung beaufschlagt. In der deutschen
Offenlegungsschrift
Des
weiteren ist aus der deutschen Offenlegungsschrift
Die
Die
Die
Der Erfindung liegt demzufolge die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung zur Temperaturmessung von Glühkerzen zu schaffen, welche für den Serieneinsatz im Kraftfahrzeug Anwendung finden können.Of the Invention is therefore based on the object, a method and to provide a device for measuring the temperature of glow plugs, which for the Series application in the automotive application.
Die Aufgabe wird durch die Merkmale der Patentansprüche 1 und 9 gelöst. Vorteilhafte Aus- und Weiterbildungen sind in den Unteransprüchen angegeben.The The object is solved by the features of claims 1 and 9. advantageous Primary and Further Education are given in the subclaims.
Gemäß der Erfindung werden in definierten Pausenzeiten zwischen den Spannungsimpulsen der die Heizmittel der Glühkerzen ansteuernden pulsweitenmodulierten Spannungssignalfolge die Heizmittel der zur Temperaturmessung herangezogenen Glühkerzen mit einem Konstantstrom oder einer Gleichspannung vorgegebener Zeitdauer beaufschlagt. Durch die Beaufschlagung ist über den Heizmitteln der Glühkerze ein Spannungsabfall meßbar, der als Maß für die momentane Isttemperatur der Glühkerze erfaßt wird. Dabei geht die Erfindung von der Erkenntnis aus, daß sich der ohmsche Widerstand der Heizmittel und damit der meßbare Spannungsabfall temperaturabhängig ändert.According to the invention are in defined pauses between the voltage pulses the heating means of the glow plugs controlling the pulse width modulated voltage signal sequence, the heating means of used for temperature measurement glow plugs with a constant current or a DC voltage of predetermined time applied. By the charge is over the heating means of the glow plug a voltage drop measurable, as a measure of the momentary Actual temperature of the glow plug is detected. The invention is based on the recognition that the ohmic resistance of the heating means and thus the measurable voltage drop changes depending on the temperature.
Die Zeitdauer, innerhalb der die Heizmittel mit dem Konstantstrom oder der Gleichspannung beaufschlagt werden, sollte sehr viel kleiner sein, als die Pausenzeiten zwischen den Spannungsimpulsen der pulsweitenmodulierten Spannungssignalfolge. Vorteilhafterweise ist sie derart bemessen, daß der Einfluß des Konstantstroms bzw. der Gleichspannung auf die Änderung der momentanen Isttemperatur der Glühkerze vernachlässigbar ist.The Period of time within which the heating means with the constant current or DC voltage should be much smaller be, as the pause times between the voltage pulses of the pulse width modulated Voltage signal sequence. Advantageously, it is dimensioned such that the Influence of Constant current or the DC voltage to the change of the current actual temperature the glow plug negligible is.
Zur Beaufschlagung der Heizmittel der Glühkerze mit einem Konstantstrom sind diese, vorzugsweise über eine Schalteinrichtung, in den definierten Pausenzeiten zwischen den Spannungsimpulsen der pulsweitenmodulierten Spannungssignalfolge mit einer Konstantstromquelle verbindbar. Eine Beaufschlagung mit Gleichspannung kann über eine herkömmlich vorgesehene Schalteinrichtung, mit der die Heizmittel mit einer Spannungsversorgung pulsweitenmoduliert verbunden werden, erfolgen.For applying the heating means of the glow plug with a constant current, these are connected to a constant current source, preferably via a switching device, in the defined pause times between the voltage pulses of the pulse-width-modulated voltage signal sequence. A Beauf DC voltage can be supplied via a conventionally provided switching device, with which the heating means are connected to a power supply pulse width modulated.
Gemäß einer vorteilhaften Ausbildung der Erfindung kann sowohl die Temperatur nur einer Glühkerze ermittelt werden, wobei die Ansteuerung aller Glühkerzen der Brennkraftmaschine dann aufgrund der Temperatur dieser Glühkerze erfolgt, als auch die Temperatur jeder der Glühkerzen erfaßt werden, wobei dann die Glühkerzen aufgrund ihrer eigenen Temperaturmessung angesteuert werden.According to one advantageous embodiment of the invention can both the temperature just a glow plug be determined, wherein the control of all the glow plugs of the internal combustion engine then due to the temperature of this glow plug, as well as the Temperature of each of the glow plugs be detected where then the glow plugs be controlled due to their own temperature measurement.
Zur Regelung der Temperatur der Glühkerzen wird der über den Heizmitteln gemessene Spannungsabfall als Maß für die momentane Isttemperatur einer Regeleinrichtung zugeführt, welche über einen Vergleich des gemessenen Spannungsabfalls mit einer Sollspannung, welche der Solltemperatur der Glühkerze entspricht, die pulsweitenmodulierte Spannungs signalfolge zur Ansteuerung der Heizmittel erzeugt. Dabei können die Glühkerzen von der Regeleinrichtung sowohl synchron als auch phasenversetzt angesteuert werden.to Control of the temperature of the glow plugs will the over the voltage measured by the heating means as a measure of the instantaneous actual temperature supplied to a control device, which over a comparison of the measured voltage drop with a nominal voltage, which the setpoint temperature of the glow plug corresponds, the pulse width modulated voltage signal sequence for driving the heating medium generated. It can the glow plugs from the controller both synchronously and out of phase be controlled.
Die Erfindung gibt die Möglichkeit einer kostengünstigen Erfassung der Temperatur der Glühkerzen, welche auch im Serieneinsatz bei Kraftfahrzeugen verwendbar ist.The Invention gives the opportunity a cost-effective Detecting the temperature of the glow plugs, which is also used in series production in motor vehicles.
Nachfolgend wird die Erfindung anhand von Ausführungsbeispielen näher beschrieben. Die zugehörigen Zeichnungen zeigen:following the invention will be described in more detail with reference to embodiments. The associated Drawings show:
Bei
der in
Im
weiteren wird die Funktionsweise der Schaltungsanordnung näher beschrieben.
Dazu zeigt
Für die Zündung des
Kraftstoffs im Brennraum einer selbstzündenden Brennkraftmaschine
ist eine bestimmte Solltemperatur an der Glühkerze
- 11
- Glühkerzeglow plug
- 22
- Heizmittel, Heizwendelheating means heating coil
- 33
- Spannungsversorgungpower supply
- 44
- Schalteinrichtungswitching device
- 55
- Klemmeclamp
- 66
- Klemmeclamp
- 77
- Verstärkeramplifier
- 88th
- Regeleinrichtungcontrol device
- 99
- KonstantstromquelleConstant current source
- 1010
- Schalteinrichtungswitching device
- 1111
- Eingangentrance
- 1212
- Eingangentrance
- UA U A
- Spannungsabfall über den HeizmittelnVoltage drop across the heating means
- UA' U A '
- Ausgangssignal des Verstärkersoutput of the amplifier
- Uimp U imp
- pulsweitenmodulierte Spannungssignalfolgepulse-width modulated Voltage signal sequence
- IMeß I measure
- Konstantstromconstant current
- UB U B
- Versorgungsspannungsupply voltage
- tMeß t measuring
- Zeitdauertime
- tp t p
- Pausenzeitbreak time
- TT
- Temperaturtemperature
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19718750A DE19718750B4 (en) | 1996-05-10 | 1997-05-02 | Method and device for measuring the temperature of glow plugs of a self-igniting internal combustion engine |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19618872 | 1996-05-10 | ||
DE19618872.5 | 1996-05-10 | ||
DE19718750A DE19718750B4 (en) | 1996-05-10 | 1997-05-02 | Method and device for measuring the temperature of glow plugs of a self-igniting internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19718750A1 DE19718750A1 (en) | 1997-11-13 |
DE19718750B4 true DE19718750B4 (en) | 2008-12-24 |
Family
ID=7793953
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19718750A Expired - Fee Related DE19718750B4 (en) | 1996-05-10 | 1997-05-02 | Method and device for measuring the temperature of glow plugs of a self-igniting internal combustion engine |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19718750B4 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19810000A1 (en) * | 1998-03-09 | 1999-09-16 | Eberspaecher J Gmbh & Co | Glow element with electrical heating wire to ignite fuel-air mixture |
SI21858A (en) * | 2004-07-19 | 2006-02-28 | Cosylab, D.O.O. | Procedure for determining and controlling the temperature of a sparking plug |
DE102006010083B4 (en) * | 2005-09-21 | 2008-09-18 | Beru Ag | Method for driving a group of glow plugs in a diesel engine |
EP1929151A1 (en) | 2005-09-21 | 2008-06-11 | Beru Aktiengesellschaft | Method for controlling a group of glow plugs for a diesel engine |
DE102006010081B4 (en) * | 2005-09-21 | 2009-06-04 | Beru Ag | Method for driving a group of glow plugs in a diesel engine |
DE102006010082B4 (en) * | 2005-09-21 | 2009-09-17 | Beru Ag | Method for driving a group of glow plugs in a diesel engine |
DE102007038131B3 (en) * | 2007-07-06 | 2008-12-24 | Beru Ag | A method of heating a ceramic glow plug and glow plug control device |
DE102008007391A1 (en) * | 2008-02-04 | 2009-08-06 | Robert Bosch Gmbh | Early failure detection on a glow plug supplied with a continuous train of voltage pulses |
DE102011018941A1 (en) * | 2011-04-29 | 2012-10-31 | Borgwarner Beru Systems Gmbh | Method for measuring the electrical resistance of a glow plug |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2001134A (en) * | 1977-06-29 | 1979-01-24 | Isuzu Motors Ltd | Engine start promoting device |
DE2743059A1 (en) * | 1977-09-24 | 1979-04-05 | Beru Werk Ruprecht Gmbh Co A | Rapid glow plug heating for diesel engine - supplying overcurrent to plug until glow temp. is reached and then pulsing current |
GB2031516A (en) * | 1978-09-19 | 1980-04-23 | Isuzu Motors Ltd | Start enhancement device for a compression ignition engine |
EP0071612B1 (en) * | 1981-01-30 | 1985-09-25 | Aktiebolaget Electrolux | An ignition system |
DE3608602A1 (en) * | 1986-03-14 | 1987-09-17 | Siemens Ag | Method for the activation of glow plugs in diesel engines |
DE3738055A1 (en) * | 1987-11-09 | 1989-05-18 | Siemens Ag | Method for controlling the temperature of glow plugs in diesel engines and circuit arrangement for carrying out the method |
-
1997
- 1997-05-02 DE DE19718750A patent/DE19718750B4/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2001134A (en) * | 1977-06-29 | 1979-01-24 | Isuzu Motors Ltd | Engine start promoting device |
DE2743059A1 (en) * | 1977-09-24 | 1979-04-05 | Beru Werk Ruprecht Gmbh Co A | Rapid glow plug heating for diesel engine - supplying overcurrent to plug until glow temp. is reached and then pulsing current |
GB2031516A (en) * | 1978-09-19 | 1980-04-23 | Isuzu Motors Ltd | Start enhancement device for a compression ignition engine |
EP0071612B1 (en) * | 1981-01-30 | 1985-09-25 | Aktiebolaget Electrolux | An ignition system |
DE3608602A1 (en) * | 1986-03-14 | 1987-09-17 | Siemens Ag | Method for the activation of glow plugs in diesel engines |
DE3738055A1 (en) * | 1987-11-09 | 1989-05-18 | Siemens Ag | Method for controlling the temperature of glow plugs in diesel engines and circuit arrangement for carrying out the method |
Also Published As
Publication number | Publication date |
---|---|
DE19718750A1 (en) | 1997-11-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
8364 | No opposition during term of opposition | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20121201 |